Lubrication of bearings



Oct. 25, 1932.

M. RALL ET AL I LUBRICATION OF BEARINGS Filed Jan. 6, 1931 Patented Oct. 25, 1932 UNITED STATES PATENT; ornca MAX RAIL, OF STUTTGABT, AND HEINRICH 318011031, STUTTGABT-BOTNANti, GER- MANY, ASSIGNOBS 10 ROBERT BOSCH A LUBBICATION Application filed January 6, 1991, Serial No.

This invention relates to improvementsin the lubrication of bearings.

The invention is more particularly described with reference to the lubrication of g the distributor bearing of a magneto ignition device. In a known construction a wick is arranged in the hollow pin in which rotates a bush with the distributor gear wheel mounted thereon, the wick sucking oil out of an oil chamber and delivering it to felt pads which are mounted in radial bores of the bearing pin and are pressed against the inner surfaces of the bush. As the bush is open at one end the oil can issue thence and 1S sprayed 16 into the magneto ignition device by the centrifugal force of the rotating parts.

This method of oiling has many disadvantages which are avoided by the arrangement of this invention in that the bush engages over the free end of the pin in the manner of a cap and a lubricating wick arranged in the axial bore of this pin is pressed against the front wall of the bush by a spring.

One form of construction of the invention $6 is illustrated by way of example in the accompanying drawing in which Figure 1 is a magneto ignition device having the distributor bearing in section.

Figure 2 1s a view on an enlarged scale of the screw ca Figure 3 1s a section on the line A-B of Figure 2.

The bush 4 which is rovided with an end wall 3 and on which a istriboutor gear wheel 85 5 is screwed is rotatably mounted on the pin 2 mounted on'the cover 1 of the Zistributor housing. A spring 7 has a lubricating wick 8 tightly drawn through it and arranged in the axial bore 6 of the pin. One end of the wick is pressed by the spring against the front wall of the bush, whilst the other end dips into the oil chamber 9 which can be filled through the channel 10.

. The bush is secured against axial displacement by a screw cap 11 and an annular disc 13 arranged between the front wall of the nut and a spring ring 12 inserted in an annular groove of the bush. The annular disc is prevented against rotation against this by a nose piece 15 engaging in the groove 14 of; the

KTIENGESELLSCHAFT, OI STUTTGABT, GER- OF BEARINGS 506,992, and in Germany January 16, 1980.

bush. The adjustment of play of the bush can be varied by the extent to which the screw cap is screwed on. After adjusting the play the nut is secured against any further displacement by a peg 17 in the flange of the pin which can engage in recesses 18 in the cap.

In thisarrangement the oil passes through the wick to the front wall-of the bearing surface and is thence spread over the upper surface of the pin. The oil which reaches the open end of the bush is arrested at the flange of the pin and flows" downwards to the end of the wick in order to begin the cycle anew.

We claim:

1. A pinion bearing comprising in combination a ca -like bush connected to the pin- 10I1 a per orated spindle supporting said bush, a wick within the erforation of said spindle, and a spring maintaining said wick 1n engagement with the cap-end of said bush.

2. A pinion bearing comprising in combination a ca -1ike bush connected to the pinion, a per orated spindle supportin said bush, an oil reservoir at one end of sai spindle, a wick within the perforation of said spindle and extending into said reservoir, and a compression spring adapted to force said lwicg into engagement with the cap-end of said 3. A pinion bearing comprising in combination a cap-like bush connected to the pinion, a perforated spindle supporting said bush, an oil reservoir at one end of said spindle, a wick extending within said spindle and into said reservoir, a spring acting on said wick and maintaining it in engagement with the cap-end of said bush, an extension piece on said wick lapped around said spindle to gxtiilnd up to the open end of said cap-like us I 4. A pinion bearing comprising in combination a ca -like bush connected to the pinion, a per orated spindle supporting said bush, an oil reservoir at one end of said spindle, a wick extending within said spindle and into said reservoir, a spring acting on said wick and maintaining it in engagement with theeap-end of said bush, an extension iece on said wick lapped around said .spin e to extend up to the open end of said cap-like m bush a shropding cap threaded upon said spin 1e, and a packing ring between said shrouding cap and the open end of said bush.

5. A pinion bearin comprising in combination a ca -1ike bus connected to the pin ion, a per orated spindle su portin said bush, an oil reservoir at one en of sai dle, a wick extending within said spindle and into'said reservoir, a spring acting on said wick and maintaining it in engagement with the cap-end of said bush, an extension piece on said wick lapped around said spindle to extend up to the open end of said cap-like bush, a shrouding cap threaded u n said spindle, a packing ring between sai shrouding cap and the open end of said bush, and locking means to lock said threaded cap relatively to said spindle in a desired position of axial adjustment.

6. A bearing comprising a perforated spindle, a member, closed at one end, rotatably mounted on said spindle an absorbent within the perforated spindle, and means for maintaining said absorbent in engagement with the closed end of said member.

. In testimony whereof we have hereunto affixed our signatures.-

MAX BALL. HEINRICH BISGHOFF.

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